The InInterval procedure provides a way to check whether or not a value lies within a specified interval. The interval is considered to be a closed interval that includes the end-points. For an array-valued X, all the values must satisfy the condition for the result to be true.
Note that I would rather call this routine ``In_Interval'', but the F90 standard does not allow underscores in defined operator names (i.e. ``.In_Interval.'' is not allowed).
|Logical = X .InInterval. (/Int1, Int2/)||,|
|Logical = X .InInterval. Interval||or|
|Logical = InInterval(X, Interval)|
|X||Input integer or real, scalar or array variable.|
|Interval||A vector of length 2 that specifies the extents of the interval to be checked.|
|(/Int1, Int2/)||A means of expressing an interval without declaring a vector.|
|InInterval||Logical which is true if X is in the closed interval, which includes the end-points.|
The InInterval code listing contains additional documentation.
Michael L. Hall